September 21 - custom location - Weather History and Averages

High Temperatures

On September 21 in this location the average high temperature is 72.4 °F (22.5 °C). The lowest recored high temperature was 55.0 °F (12.8 °C) in 1981 and the highest recored high temperature was 90.3 °F (32.4 °C) in 1962. The high temperature is usually* between 67.3 °F (19.6 °C) and 77.5 °F (25.3 °C). About a quarter of the time, the high temperature is less than 67.3 °F (19.6 °C), and another quarter of the time, the high temperature is greater than and 77.5 °F (25.3 °C). About 95% of the time, the high temperature has been between 57.6 °F (14.2 °C) and 87.2 °F (30.7 °C).

Low Temperatures

On September 21 in this location the average low temperature is 52.8 °F (11.5 °C). The lowest recored low temperature was 31.3 °F (-0.4 °C) in 1968 and the lowest recored low temperature was 71.2 °F (21.8 °C) in 1965. The low temperature is usually* between 48.0 °F (8.9 °C) and 57.6 °F (14.2 °C). About a quarter of the time, the low temperature is less than 48.0 °F (8.9 °C), and another quarter of the time, the low temperature is greater than and 57.6 °F (14.2 °C). About 95% of the time, the low temperature has been between 38.8 °F (3.8 °C) and 66.7 °F (19.3 °C).

Frost

On September 21 in this location expect the temperatures to drop below freezing for a risk of frost about 0.2% of the time.

Usually* in this context means around 50% of the time, assuming a normal distribution of values.

Data Source(s)

The data used to compute the average high/low temperatures for this location were taken from the following stations: